2-4 Service Manual
4025-XXX
920 Fuser Error An error is detected in fuser on time. Go to “Error Code 920” on
page 2-21.
921 Fuser Error Fuser temperature reaches 250 degrees celsius or more. Go to
“Error Code 921” on page 2-22.
922 Fuser Error Temperature of the outboard part of fuser cannot be monitored.
Go to “Error Code 922” on page 2-23.
923 Fuser Error Temperature of the inboard part of fuser cannot be monitored.
Go to “Error Code 923” on page 2-23.
924 Fuser Error Engine detected abnormally high temperature from the
thermistor. Go to “Error Code 924” on page 2-24.
927 PC Cartridge EP cartridge CRUM read/write error. Go to “Error Code 927” on
page 2-24.
928 PC Cartridge EP cartridge pirated-version CRUM. Go to “Error Code 928” on
page 2-25.
929 PC Cartridge EP cartridge CRUM failure. Go to “Error Code 929” on
page 2-26.
930 Printhead Error BD signal transmission interval is longer than specified. Go to
“Error Code 930” on page 2-27.
931 Printhead Error BD signal transmission interval is shorter than specified. Go to
“Error Code 931” on page 2-28.
939 RIP-Engine Comm. The RIP card processor cannot communicate with the engine
processor. The ESS PWB board or the MCU PWB board is
defective. Check each board for correct installation and secure
ground. If no problem is found, replace the FRUs in the following
order:
“Controller Board (ESS PWB)” on page 4-94
“Engine Board (MCU PWB)” on page 4-92
941 Tray 1 Failure Tray 1 failure. Go to “Error Code 941” on page 2-29.
942 Tray 2 Failure Tray 2 failure. Go to “Error Code 942” on page 2-30.
943 Tray 3 Failure Tray 3 failure. Go to the Options Service Manual.
944 Tray 4 Failure Tray 4 failure. Go to the Options Service Manual.
945 Tray 5 Failure Tray 5 failure. Go to the Options Service Manual.
953 NVRAM Failure NVRAM Chip Failure. Replace the “Controller Board (ESS
PWB)” on page 4-94.
954 NVRAM Failure NVRAM CRC Failure. Replace the “Controller Board (ESS
PWB)” on page 4-94.
955 Code CRC The code ROM failed the CRC check. Replace the “Controller
Board (ESS PWB)” on page 4-94.
956 ESS PWB Board RIP card failure: processor failure. Replace the “Controller
Board (ESS PWB)” on page 4-94.
957 ESS PWB Board RIP card failure: ASIC failure. Replace the “Controller Board
(ESS PWB)” on page 4-94.
Service Error Code Table
9xx
Code
Second Line
Message
Description/Action
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